„Þríbrotar“: Munur á milli breytinga
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Lína 1:
{{Taxobox
| name = Þríbrotar
| fossil_range = Ár[[kambríum]]<ref name="lieberman02" /><ref name=Fortey00a>{{citation|title=Trilobite!: Eyewitness to Evolution|first=Richard|last=Fortey|author-link=Richard Fortey |year=2000|isbn=978-0-00-257012-1|publisher=HarperCollins|location=London}}</ref> – [[permtímabilið|síðperm]]
| image = Kainops invius lateral and ventral.JPG
| image_caption = ''[[Kainops|Kainops invius]]'', early [[Devonian]]
| image2 = Paradoxides sp.jpg
| image2_caption = ''[[Paradoxides|Paradoxides sp.]]'', late [[Cambrian]]
| regnum = [[Dýraríki]] (''Animalia'')
| phylum = [[Liðdýr]] (''Arthropoda'')
| unranked = †''[[Artiopoda]]''
| subphylum = ''Trilobitomorpha''
| classis = Trilobita
| taxon = Trilobita
| authority = [[Johann Ernst Immanuel Walch|Walch]], 1771<ref name=Kihm&St.John07>
{{Cite book|author1=Robert Kihm |author2=James St. John |chapter=Walch's trilobite research – A translation of his 1771 trilobite chapter |editor=Donald G. Mikulic |editor2=Ed Landing |editor3=Joanne Kluessendorf |title=Fabulous fossils – 300 years of worldwide research on trilobites |journal=New York State Museum Bulletin |volume=507 |pages=115–140 |publisher=University of the State of New York |year=2007 |chapter-url=http://www.nysm.nysed.gov/staffpubs/docs/16439.pdf |url-status=dead |archiveurl=https://web.archive.org/web/20140714172533/http://www.nysm.nysed.gov/staffpubs/docs/16439.pdf |archivedate=2014-07-14 }}</ref>
|subdivision_ranks = Ættbálkar
|subdivision =
*[[Agnostida]]
*[[Asaphida]]
*[[Corynexochida]]
*[[Harpetida]]
*[[Nectaspida]]
*[[Redlichiida]]
*[[Lichida]]
*[[Odontopleurida]]
*[[Phacopida]]
*[[Proetida]]
*[[Ptychopariida]]
}}
[[Mynd:Koneprusia brutoni.jpg|thumb|''Koneprusia brutoni'']]
'''Þríbrotar''' ([[fræðiheiti]] ''Trilobita'' (áður ''Trilovitae'') eru [[aldauða]] hópur [[sjávarliðdýr]]a, sem finnast sem [[Steingervingur|steingervingar]] í [[sjávarset]]i frá [[fornlífsöld]]. Þríbrotar eru einkennisdýr [[Kambríumtímabilið|kambríumtímabilsins]].
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